# DRUPAL-CORE-2023-004: Drupal core provides a page that outputs the markup from `phpinfo()` to assist with diagnosing PHP configuration.

> An attacker with XSS access to a privileged user can exploit the phpinfo page to disclose sensitive configuration data, aiding privilege escalation.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 15 Mar 2023

## What is DRUPAL-CORE-2023-004?

DRUPAL-CORE-2023-004 is a vulnerability in drupal/core, published on 15 Mar 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Drupal core provides a page that outputs the markup from `phpinfo()` to assist with diagnosing PHP configuration.

If an attacker was able to achieve an XSS exploit against a privileged user, they may be able to use the phpinfo page to access sensitive information that could be used to escalate the attack.

This vulnerability is mitigated by the fact that a successful XSS exploit is required in order to exploit it.

## Which versions are affected by DRUPAL-CORE-2023-004?

1 open source package ship an affected version, including drupal/core.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/core` | Packagist | From 8.0.0 | 9.4.12, 9.5.5, 10.0.5 |

## How do I fix DRUPAL-CORE-2023-004?

Upgrade drupal/core to a fixed version for your release line: 9.4.12, 9.5.5 or 10.0.5.

## Is DRUPAL-CORE-2023-004 being exploited?

There is no known exploitation of DRUPAL-CORE-2023-004 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CORE-2023-004 and fix it if it is affected.

What it is: DRUPAL-CORE-2023-004 is a vulnerability in drupal/core, published on 15 Mar 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of DRUPAL-CORE-2023-004 in the wild and no public exploit code.

Affected packages and fixed versions:
- drupal/core (Packagist): affected from 8.0.0; fixed in 9.4.12, 9.5.5, 10.0.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/DRUPAL-CORE-2023-004/ (Markdown: https://insights.sbomify.com/DRUPAL-CORE-2023-004/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CORE-2023-004

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CORE-2023-004/
Summaries are generated and may contain mistakes; the official description above is the record.